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Earth's first animals barely evolved until sex changed everything
Earth's first animals barely evolved until sex changed everything - Date: - June 10, 2026 - Source: - University of Cambridge - Summary: - Earth’s earliest animals may have held evolution back because they reproduced asexually, creating low-competition communities that changed very little over time. When environmental pressures pushed them toward sexual reproduction, biodiversity exploded and evolution accelerated dramatically.
A lack of sex held back life's diversity for millions of years, fossil study finds
A lack of sex held back life's diversity for millions of years, fossil study finds Sadie Harley Scientific Editor Robert Egan Associate Editor The way that Earth's first animals reproduced held back life's diversity for millions of years, until stress and competition led to the development of sexual reproduction, which in turn accelerated the pace of evolution. Researchers from the University of Cambridge studied fossils from the oldest-known animals on Earth, dating from 574 million years...